I hope someone from Topps is reading this and uses those 12x18 art pieces as redemption hits. Put a redemption code on the back of the 1/1 parallel to make that a monster hit.

As many artists work digitally, I don't know if this is possible.

And like Spider-Fan said, it's unlikely Topps will own the original artwork. I know when artists do prints for SW Celebration conventions, Lucasfilm has first right of refusal to purchase the originals. That may work here, as well.